OpenLLM-France/wikimedia huggingface dataset:
# List of number-one singles of 1982 (Ireland)

This is a list of singles which have reached number one on the Irish Singles Chart in 1982.
| Week ending | Song | Artist |
| 2 January | "One of Us" | ABBA |
| 9 January | "One of Us" | ABBA |
| 16 January | "One of Us" | ABBA |
| 23 January | "The Land of Make Believe" | Bucks Fizz |
| 30 January | "The Land of Make Believe" | Bucks Fizz |
| 6 February | "Oh Julie" | Shakin' Stevens |
| 13 February | "Oh Julie" | Shakin' Stevens |
| 20 February | "Oh Julie" | Shakin' Stevens |
| 27 February | "The Lion Sleeps Tonight" | Tight Fit |
| 6 March | "The Lion Sleeps Tonight" | Tight Fit |
| 13 March | "The Lion Sleeps Tonight" | Tight Fit |
| 20 March | "The Lion Sleeps Tonight" | Tight Fit |
| 27 March | "The Lion Sleeps Tonight" | Tight Fit |
| 3 April | "Seven Tears" | Goombay Dance Band |
| 10 April | "Seven Tears" | Goombay Dance Band |
| 17 April | "Seven Tears" | Goombay Dance Band |
| 24 April | "Ebony and Ivory" | Paul McCartney with Stevie Wonder |
| 1 May | "Ebony and Ivory" | Paul McCartney with Stevie Wonder |
| 8 May | "Ebony and Ivory" | Paul McCartney with Stevie Wonder |
| 15 May | "A Little Peace" | Nicole |
| 22 May | "A Little Peace" | Nicole |
| 29 May | "A Little Peace" | Nicole |
| 5 June | "A Little Peace" | Nicole |
| 12 June | "A Little Peace" | Nicole |
| 19 June | "House of Fun" | Madness |
| 26 June | "I've Never Been to Me" | Charlene |
| 3 July | "I've Never Been to Me" | Charlene |
| 10 July | "I've Never Been to Me" | Charlene |
| 17 July | "Happy Talk" | Captain Sensible |
| 24 July | "Fame" | Irene Cara |
| 31 July | "Fame" | Irene Cara |
| 7 August | "Fame" | Irene Cara |
| 14 August | "Come On Eileen" | Dexys Midnight Runners |
| 21 August | "Come On Eileen" | Dexys Midnight Runners |
| 28 August | "Come On Eileen" | Dexys Midnight Runners |
| 4 September | "Come On Eileen" | Dexys Midnight Runners |
| 11 September | "Eye of the Tiger" | Survivor |
| 18 September | "Eye of the Tiger" | Survivor |
| 25 September | "Eye of the Tiger" | Survivor |
| 2 October | "Hard to Say I'm Sorry" | Chicago |
| 9 October | "Hard to Say I'm Sorry" | Chicago |
| 16 October | "Pass the Dutchie" | Musical Youth |
| 23 October | "Pass the Dutchie" | Musical Youth |
| 30 October | "Starmaker" | The Kids from "Fame" |
| 6 November | "Do You Really Want to Hurt Me" | Culture Club |
| 13 November | "Starmaker" | The Kids from "Fame" |
| 20 November | "I Don't Wanna Dance" | Eddy Grant |
| 27 November | "I Don't Wanna Dance" | Eddy Grant |
| 4 December | "Mirror Man" | The Human League |
| 11 December | "Save Your Love" | Renée and Renato |
| 18 December | "Save Your Love" | Renée and Renato |
| 25 December | "Save Your Love" | Renée and Renato |
* 20 Number Ones
* Most weeks at No. 1 (song): "The Lion Sleeps Tonight" - Tight Fit, "A Little Peace" - Nicole (5)
* Most weeks at No. 1 (artist): Tight Fit, Nicole (5)
* Most No. 1s: all artists 1 Number One
# Promiscuous traffic

In computer networking, promiscuous traffic, or cross-talking, describes situations where a receiver configured to receive a particular data stream receives that data stream and others.
In particular, in multicast socket networking, an example of promiscuous traffic is when a socket configured to listen on a specific multicast address group A with a specific port P, noted A:P, receives traffic from A:P but also from another multicast source. For instance, a socket is configured to receive traffic from the multicast group address 203.0.113.70, port 36000 (noted 203.0.113.70:36000), but receives traffic from both 203.0.113.70:36000 and 203.0.113.71:36000.
This type of promiscuous traffic, due to a lack of address filtering, has been a recurring issue with certain Unix and Linux kernels, but has never been reported on Microsoft Windows operating systems post Windows XP.
Another form of promiscuous traffic occurs when two different applications happen to listen on the same group address. As the former type of promiscuous traffic (lack of address filtering) can be considered a bug at the operating system level, the latter reflects global configuration issues.
# Necroscia

Necroscia is an Asian genus of stick insects in the family Lonchodidae and tribe Necrosciini. Species have been recorded from South-East Asia.

## Species

The Phasmida Species File list:
* Necroscia adspersa (Redtenbacher, 1908)
* Necroscia affinis (Gray, 1835)
* Necroscia analis (Redtenbacher, 1908)
* Necroscia andii Seow-Choen, 2018
* Necroscia aruana Westwood, 1859
* Necroscia biguttacephala Seow-Choen, 2018
* Necroscia brunneri Kirby, 1904
* Necroscia ceres Stål, 1877
* Necroscia chloris Audinet-Serville, 1838
* Necroscia chlorotica Audinet-Serville, 1838
* Necroscia confusa (Redtenbacher, 1908)
* Necroscia connexa (Redtenbacher, 1908)
* Necroscia conspersa Stål, 1877
* Necroscia davidis (Le Guillou, 1841)
* Necroscia dianica Ho, 2017
* Necroscia distincta Brancsik, 1898
* Necroscia edybhaskarai Seow-Choen, 2018
* Necroscia eucerca Stål, 1877
* Necroscia fasciolata Stål, 1877
* Necroscia fatua Stål, 1877
* Necroscia flavescens (Chen & Wang, 1998)
* Necroscia flavogranulosa Günther, 1943
* Necroscia flavoguttulata (Redtenbacher, 1908)
* Necroscia frondosa Bates, 1865
* Necroscia haanii Kirby, 1904
* Necroscia hainanensis (Chen & He, 2002)
* Necroscia hariola (Günther, 1935)
* Necroscia horsfieldii Kirby, 1904
* Necroscia inflexipes (Olivier, 1792)
* Necroscia ingenua (Redtenbacher, 1908)
* Necroscia involutecercata (Redtenbacher, 1908)
* Necroscia ischnotegmina Bragg, 2005
* Necroscia khoonmengi Seow-Choen, 2016
* Necroscia kotatinggia Brock, 1999
* Necroscia lacteipennis Bates, 1865
* Necroscia laterala Seow-Choen, 2018
* Necroscia lehi Seow-Choen, 2016
* Necroscia maculiceps Stål, 1877
* Necroscia malleoformia Hennemann, 2021
* Necroscia manicata (Lichtenstein, 1802)
* Necroscia mista (Chen & He, 2008)
* Necroscia multicolor (Redtenbacher, 1908)
* Necroscia munda (Redtenbacher, 1908)
* Necroscia nasiri Seow-Choen, 2018
* Necroscia nigrofasciata (Redtenbacher, 1908)
* Necroscia notata (Chen & Zhang, 2008)
* Necroscia nuda Seow-Choen, 2018
* Necroscia ohli Seow-Choen, 2017
* Necroscia pallida (Redtenbacher, 1908)
* Necroscia philippina Redtenbacher, 1908
* Necroscia pirithous Westwood, 1859
* Necroscia prasina (Burmeister, 1838)
* Necroscia punctata (Gray, 1835)
* Necroscia randolfae Seow-Choen, 2016
* Necroscia robustior (Redtenbacher, 1908)
* Necroscia rosenbergii Kaup, 1871
* Necroscia simplex (Redtenbacher, 1908)
* Necroscia stali (Redtenbacher, 1908)
* Necroscia sukriadii Seow-Choen, 2018
* Necroscia thisbe Stål, 1877
* Necroscia tibangensis (Günther, 1935)
* Necroscia tonquinensis Kirby, 1904
* Necroscia tujuha Seow-Choen, 2018
* Necroscia virens Stål, 1877
* Necroscia vittata Audinet-Serville, 1838
* Necroscia westwoodi Kirby, 1904
* Necroscia zomproi Seow-Choen, 2016
# Water immersion objective

In light microscopy, a water immersion objective is a specially designed objective lens used to increase the resolution of the microscope. This is achieved by immersing both the lens and the specimen in water which has a higher refractive index than air, thereby increasing the numerical aperture of the objective lens.

## Applications

Water immersion objectives are used not only at very large magnifications that require high resolving power, but also of moderate power as there are water immersion objectives as low as 4X. Objectives with high power magnification have short focal lengths, facilitating the use of water. The water is applied to the specimen (conventional microscope), and the stage is raised, immersing the objective in water. Sometimes with water dipping objectives, the objective is directly immersed in the solution of water which contains the specimens to look at. Electrophoretic preparations used in the case of comet assay can benefit from the use of water objectives.
The refractive index of the water (1.33) is closer to those of imaged materials or to the glass of the cover-slip, so more light will be collected/focused by this type of objective comparing to air-immersion ones, leading to a range of higher numerical apertures (NA).

## Correction collar

Unlike oil, water does not have the same or near identical refractive value as the cover slip glass, so a correction collar is needed to be able to variate for its thickness. Lenses without a correction collar generally are made for the use of a 0.17 mm cover slip or for use without a coverslip (dipping lens).
# Wolfgang Dietrich

Wolfgang Dietrich may refer to:
* Wolfgang Dietrich (businessman) (born 1948), German businessman
* Wolfgang Dietrich (footballer) (born 1949), Australian rules footballer
* Wolfgang Dietrich (political scientist) (born 1956), Austrian peace researcher and political scientist
# Thayer Lake North Shelter Cabin

The Thayer Lake North Shelter Cabin is a historic backcountry shelter in the Admiralty Island National Monument, part of the Tongass National Forest in Southeast Alaska. It was one of a number of such facilities built by Civilian Conservation Corps (CCC) on the Admiralty Island Canoe Route between 1933 and 1937. This cabin, a three-sided Adirondack-style log structure with shake walls and roof, was built in 1935, and located at the northern tip of Thayer Lake, near a trailhead and a small log bridge.
The cabin was listed on the National Register of Historic Places in 1995.
# Upright Motive No. 1: Glenkiln Cross

Upright Motive No. 1: Glenkiln Cross (LH 377) is a bronze sculpture by Henry Moore, cast in a number of copies in 1955–56. It was the first of a series of narrow vertical sculptures by Moore, who compared them to totem poles.

## Edition

There are versions in Glenkiln Sculpture Park, in Galloway, Scotland, from where it takes its name, the Kroller-Muller Museum in Otterlo in the Netherlands, the Amon Carter Museum in Fort Worth, Texas, and the Hirshhorn Museum and Sculpture Garden in Washington, D.C. Some of these are mounted in a row with others of the "Upright Motive" series, as at Otterlo and Fort Worth; three in a row producing a reminiscence of the three crosses in the Crucifixion of Jesus.

## History

Moore described how the original idea came from a commission for an Olivetti building in Milan, where he "visited the site and a lone Lombardy poplar growing behind the building convinced me that a vertical work would act as the correct counterfoil to the horizontal rhythm of the building. This idea grew ultimately into the 'Upright Motifs'." Between 1951 and 1976, Sir William Keswick, who owned the Glenkiln estate, bought and arranged works by Henry Moore, Jacob Epstein, and Auguste Rodin, creating the world's first collection of sculpture in a landscape setting, Glenkiln Sculpture Park. Moore and Keswick installed the first cast of the cross on a hilltop, where they saw a shepherd and his flock; Moore said "From a distance it looks rather like one of the old Celtic crosses."

## Gallery

* Three of the Upright Motives in Otterlo; No. 1 in the middle
* Left side, Washington
* Right side, Washington
* title card in Washington
# No Decision (film)

No Decision is an Australian television play by Ruth Park and D'Arcy Niland.
It was commissioned by Australia's ATN-7 in 1959 but they decided not to produce it. The writers then won in a writing competition in England. It was filmed for British TV in 1962 with a cast including Leo McKern and John Meillon.
# List of number-one singles of 1983 (Ireland)

This is a list of singles which have reached number one on the Irish Singles Chart in 1983.
| Week ending | Song | Artist |
| 1 January | "Save Your Love" | Renée and Renato |
| 8 January | "Save Your Love" | Renée and Renato |
| 15 January | "Save Your Love" | Renée and Renato |
| 22 January | "You Can't Hurry Love" | Phil Collins |
| 29 January | "Down Under" | Men at Work |
| 5 February | "Down Under" | Men at Work |
| 12 February | "Down Under" | Men at Work |
| 19 February | "Down Under" | Men at Work |
| 26 February | "Too Shy" | Kajagoogoo |
| 5 March | "Billie Jean" | Michael Jackson |
| 12 March | "Billie Jean" | Michael Jackson |
| 19 March | "Total Eclipse of the Heart" | Bonnie Tyler |
| 26 March | "Total Eclipse of the Heart" | Bonnie Tyler |
| 2 April | "Total Eclipse of the Heart" | Bonnie Tyler |
| 9 April | "Let's Dance" | David Bowie |
| 16 April | "Let's Dance" | David Bowie |
| 23 April | "Words" | F. R. David |
| 30 April | "Words" | F. R. David |
| 7 May | "Words" | F. R. David |
| 14 May | "True" | Spandau Ballet |
| 21 May | "Words" | F. R. David |
| 28 May | "Words" | F. R. David |
| 4 June | "Every Breath You Take" | The Police |
| 11 June | "Every Breath You Take" | The Police |
| 18 June | "Every Breath You Take" | The Police |
| 25 June | "Every Breath You Take" | The Police |
| 2 July | "Baby Jane" | Rod Stewart |
| 9 July | "Baby Jane" | Rod Stewart |
| 16 July | "Moonlight Shadow" | Mike Oldfield |
| 23 July | "Wherever I Lay My Hat (That's My Home)" | Paul Young |
| 30 July | "Wrapped Around Your Finger" | The Police |
| 6 August | "Wrapped Around Your Finger" | The Police |
| 13 August | "Wrapped Around Your Finger" | The Police |
| 20 August | "Give it Up" | KC and the Sunshine Band |
| 27 August | "Give it Up" | KC and the Sunshine Band |
| 3 September | "Wings of a Dove" | Madness |
| 10 September | "Red Red Wine" | UB40 |
| 17 September | "Red Red Wine" | UB40 |
| 24 September | "Red Red Wine" | UB40 |
| 1 October | "Karma Chameleon" | Culture Club |
| 8 October | "Karma Chameleon" | Culture Club |
| 15 October | "Karma Chameleon" | Culture Club |
| 22 October | "Karma Chameleon" | Culture Club |
| 29 October | "They Don't Know" | Tracey Ullman |
| 5 November | "They Don't Know" | Tracey Ullman |
| 12 November | "Uptown Girl" | Billy Joel |
| 19 November | "Uptown Girl" | Billy Joel |
| 26 November | "Uptown Girl" | Billy Joel |
| 3 December | "Love of the Common People" | Paul Young |
| 10 December | "Love of the Common People" | Paul Young |
| 17 December | "Only You" | The Flying Pickets |
| 24 December | "Only You" | The Flying Pickets |
| 31 December | "Only You" | The Flying Pickets |
* 22 Number Ones
* Most weeks at No. 1 (song): "Words" - F. R. David (5)
* Most weeks at No. 1 (artist): The Police (7)
* Most No. 1s: The Police, Paul Young (2 each)
# Ghost Ship

A ghost ship is a vessel with no living crew aboard.
Ghost Ship may also refer to:

## Film and television

* The Ghost Ship, a 1943 film
* Ghost Ship (1952 film), a British thriller
* Ghost Ship (2002 film), an American supernatural horror film
* "The Ghost Ship" (Stingray), a 1964 television episode
* "Ghost Ship", an episode of MacGyver (1985 TV series, season 3)
* "Ghost Ship", an episode of Quantum Leap (season 4)

## Literature

* Ghost Ship (Cussler novel), 2014
* Ghost Ship (novella), a 2002 Doctor Who novella by Keith Topping
* Ghost Ship, a 1988 Star Trek: The Next Generation novel by Diane Carey
* The Ghost Ship, a 1990 book of poetry by Henry Hart
* "The Ghost Ship", a 1912 short story by Richard Barham Middleton
* Ghost Ship, a 2011 science fiction novel by Sharon Lee and Steve Miller

## Music

* Ghost Ship (album), by Sultans, 2000
* Ghost Ships (album), by James Reyne, 2007
* Ghost Ship (Theocracy album), 2016
* Ghostship EP, by The Fall of Troy, 2004
* Ghost Ship (band), a contemporary worship music band from Seattle
* "Ghost Ship", a song by Blur from the 2015 album The Magic Whip
* "Ghost Ship", a song by Nox Arcana from the 2008 Phantoms of the High Seas
* "Ghost Ship", a song by Robyn Hitchcock from the 1995 album You & Oblivion
* "Ghost Ship", a 2011 song by Neverending White Lights
* "Ghostship", a song by Shadow Gallery from the 2009 album Carved in Stone

## Other uses

* Ghost Ship (beer), by Adnams brewery
* Ghost Ship, an imprint of Seven Seas Entertainment
* Ghost Ship (sculpture), a 2001 sculpture in Portland, Oregon, U.S.
* Ghost Ship warehouse fire, Oakland, California, U.S., in 2016
* Juliet Marine Systems Ghost, an advanced super-cavitating stealth ship
# Wanjiru

Wanjiru is a name of Kikuyu origin that may refer to:
* The main character of a Kikuyu story, "Wanjiru, Sacrificed by Her People"
* Daniel Wanjiru (born 1992), Kenyan long-distance runner
* Esther Wanjiru (born 1977), Kenyan long-distance track and road runner and 1998 Commonwealth Games champion
* Esther Wanjiru Mwikamba, Kenyan crime victim in Dubai in 2012
* Helen Wanjiru Gichohi, Kenyan ecologist and President of the African Wildlife Foundation
* Grace Wanjiru (born 1979), Kenyan race walker and four-time African champion
* Margaret Wanjiru, Kenyan bishop and Member of the National Assembly for the Orange Democratic Movement
* Samuel Wanjiru (1986–2011), Kenyan marathon runner and 2008 Olympic champion
* Ruth Wanjiru (born 1981), Kenyan road runner based in Japan
* Veronica Nyaruai Wanjiru (born 1989), Kenyan middle- and long-distance runner
# Mtego wa Noti

Mtego wa Noti is an administrative ward in Uvinza District of Kigoma Region in Tanzania. The ward covers an area of 293 km$^2$ (113 sq mi), and has an average elevation of 1,061 m (3,481 ft). In 2016 the Tanzania National Bureau of Statistics report there were 16,850 people in the ward, from 15,308 in 2012.$^{:127}$$^{:151}$
# That's a Man

"That's a Man" is a song written by Mark D. Sanders, Ed Hill, and Steven Dale Jones and recorded by American country music singer Jack Ingram. It was released in October 2008 as the first single to Ingram’s album Big Dreams & High Hopes. The song is Ingram's sixth Top 40 entry on the Billboard country charts.

## Content

"That's a Man" is a mid-tempo mostly accompanied by electric guitar and pedal steel guitar. In it, the narrator describes three different men, citing each as an example of men that are committed to their lives and peers. The first verse focuses on a nineteen-year-old who works two jobs to raise a family; the second tells of two Marines who become friends while in combat until one of them is killed; and an old farmer who is trying to maintain his family's farm is described in the third.

## Critical reception

Matt Bjorke of Roughstock gave the song a favorable review. He compared the song to Lee Roy Parnell's "roots-y country rock anthems about the common folks" such as 1993's "On the Road", adding " There’s a place on country radio for songs like “That’s A Man” and Ingram should be the man to take it." Jasper Jones of 411 Mania gave the song two-and-a-half out of five, saying that the song had a worthy concept but awkward lyrics.

## Chart performance

| Chart (2008–2009) | Peak position |
| US Hot Country Songs (Billboard) | 18 |
| US Bubbling Under Hot 100 Singles (Billboard) | 4 |
# Usera (Madrid Metro)

Usera is a station on Line 6 of the Madrid Metro. It is located in Zone A.
# Nixonia

Nixonia is a genus of wasps. It is the only member of the family Nixoniidae in the superfamily Platygastroidea. They are amongst the largest of the platygastroids at up to 9 mm in length. Members of the genus are known from Africa, the Indian subcontinent and Southeast Asia. The biology of only one species is known, which parasitizes orthopteran eggs.

## Taxonomy

* Nixonia atra Masner, 1970
* Nixonia bini Johnson & Masner, 2006
* Nixonia corrugata Johnson & Masner, 2006
* Nixonia elongata Johnson & Masner, 2006
* Nixonia flavocincta Johnson & Masner, 2006
* Nixonia gigas Johnson & Masner, 2006
* Nixonia krombeini Johnson & Masner, 2006
* Nixonia lamorali Johnson & Masner, 2006
* Nixonia masneri van Noort & Johnson, 2009
* Nixonia mcgregori van Noort & Johnson, 2009
* Nixonia pecki Johnson & Masner, 2006
* Nixonia pretiosa Masner, 1958 .
* Nixonia priesneri Johnson & Masner, 2006
* Nixonia sicaria Johnson & Masner, 2006
* Nixonia stygica Johnson & Masner, 2006
* Nixonia watshami Johnson & Masner, 2006
# Prosotas dubiosa

Prosotas dubiosa, the tailless lineblue or small purple lineblue, is a blue butterfly (Lycaenidae) found in Asia to Australia. The species was first described by Georg Semper in 1879.

## Subspecies

The subspecies of Prosotas dubiosa are:
* Prosotas dubiosa dubiosa - Australia
* Prosotas dubiosa eborata (Tite, 1963) - Solomon Islands
* Prosotas dubiosa indica (Evans, [1925]) - India
* Prosotas dubiosa lumpura (Corbet, 1938) - Malay Peninsula
* Prosotas dubiosa subardates (Piepers & Snellen, 1918) - Java, Sulawesi

## Range

The butterfly occurs in Sri Lanka and peninsular India and the Himalayas from Sikkim to Assam. The range extends onto Myanmar and Yunnan, and, possibly Thailand, Peninsular Malaysia, Singapore, Hong Kong, Sumatra, Borneo and Java. Possibly Philippines and Sulawesi. Further east the butterfly occurs in Australia, New Guinea and the Solomon Islands. In Australia the butterfly occurs from Northern Australia to New South Wales (Coffs Harbour).

## Gallery

* In Talakona forest, in Chittoor district of Andhra Pradesh, India
* In Talakona forest, in Chittoor district of Andhra Pradesh, India
* In Hyderabad, India
* In Hyderabad
* In Narsapur, Medak district, India
* In Hong Kong
* Specimens
# Yang Bin (businessman)

Yang Bin (Chinese: 楊斌; born 1963) is a Chinese-Dutch businessman who was formerly listed as the second richest man in China by Forbes for 2001. He once held assets in the horticulture and real estate industries, owning stakes in the Euro-Asia Agricultural Holdings and Holland Village, China. His fall from grace came in 2002, when he was arrested on charges of tax evasion. In 2003 Yang Bin was sentenced to 18 years in prison. Mr. Yang was released from prison on September 26, 2016.

## Biography

Born in Nanjing, Yang lost his parents when he was five; he was raised by his grandmother and relatives. He was a former officer in the People's Liberation Army Navy. He later emigrated to the Netherlands in 1987, where he ran a textile business and became a naturalized Dutch citizen. He returned to China in 1995, starting his orchid business in Shenyang using modern horticultural techniques learned from the Netherlands.
In September 2002, North Korea chose Yang Bin to govern and lead the economic development of the Sinŭiju Special Administrative Region. Shortly after his appointment, Chinese authorities removed him from his home and placed him on house arrest on 4 October. He was formally arrested on charges of tax evasion in November. Yang Bin was then formally sentenced in July 2003 to 18 years, and was fined for 2.3 million renminbi. Many of the charges were related to the building of Holland Village, a 220-hectare Netherlands-themed development project in the suburbs of Shenyang. Included among the charges was the building of properties on land originally acquired for agricultural use.
# Warawara Lake (Oruro)

Warawara (Aymara warawara star, also spelled Wara Wara) is a lake in Bolivia. It is situated in the Oruro Department, Sebastián Pagador Province, which is identical to the Santiago de Huari Municipality. The river Jach'uyu (Aymara for "big corral", Jachuyo) originates at the lake. It flows to the north-east.
# Trimethylene carbonate

Trimethylene carbonate, or 1,3-propylene carbonate, is a 6-membered cyclic carbonate ester. It is a colourless solid that upon heating or catalytic ring-opening converts to poly(trimethylene carbonate) (PTMC). Such polymers are called aliphatic polycarbonates and are of interest for potential biomedical applications. An isomeric derivative is propylene carbonate, a colourless liquid that does not spontaneously polymerize.

## Preparation

This compound may be prepared from 1,3-propanediol and ethyl chloroformate (a phosgene substitute), or from oxetane and carbon dioxide with an appropriate catalyst:
    HOC$_3$H$_6$OH + ClCO$_2$C$_2$H$_5$ → C$_3$H$_6$O$_2$CO + C$_2$H$_5$OH + HCl
    C$_3$H$_6$O + CO$_2$ → C$_3$H$_6$O$_2$CO
This cyclic carbonate undergoes ring-opening polymerization to give poly(trimethylene carbonate), abbreviated PTMC.

## Medical devices

The polymer PTC is of commercial interest as a biodegradable polymer with biomedical applications. A block copolymer of glycolic acid and trimethylene carbonate (TMC) is the material of the Maxon suture, a monofilament resorbable suture which was introduced in the mid-1980s. The same material is used in other resorbable medical devices.
# Wollert

Wollert may refer to:
* Wollert (surname)
* Wollert (given name)
* Wollert, Victoria, Australia, a suburb in Melbourne